August j



A. J. F. MILLER.

.VENTILATOR.

(No Model.)

Patented Jan. 5, 1897.

I W 56s.:

Erica,

AUGUST J. F. MILLER, OF CENTRALIA, ILLINOIS, ASSIGNOR OF ON E-HALF TO G.E. EIS, S. L. DVIGHT', A. H. RAINEY, AND O V.

SAME PLACE.

PARKINSON, OF

VENTILATO R.

SPECIFICATION forming part of Letters Patent No. 574,619, dated January5, 1897. Application filed July 14, 1896. Serial NO. 599,111. (Nomodeld4 To all witam it may conccrn:

Be it known that l, AUGUST J. F. MILLER, a citizen of the United States,residin g at Centralia, in the county of Marion and State of Illinois,have invented certain new and useful Improvements in Ventilators; and Ido declare the following to be a full, clear, and eXact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to certain new and useful improvements in devicesfor ventilating a room, a car, or other compartment; and it has for itsobject, among others, to provide a simple and cheap portable device thatcan be readily set up in any desired position, supported on a bracket orother support; and it comprises a case within which are two fans run byan electric motor or by other means, if desired, the one fan drawingfrom inside the room or compartment and discharging the air outside thebuilding or car, and the other fan drawing from outside the house orcompartment and delivering into the room or car or compartment, the airbeing heated in its passage through the casing, or, when desired, theair may be forced into the room without being heatedj' The deviceoccupies but little space, does not require that the house be builtespecially for its use, and can be run at just such times as desired.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention in this instance resides in the peculiar combinations andthe construction, arrangement, and adaptation of parts, all as morefully hereinafter described, shown in the drawings, and thenparticularly pointed out in the claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form apart of thisspecification, and in which- Figure l is a perspective View of thedevice which constitutes my invention, looking at the top thereof. Fig.2 is a section through the same on the line 2 2 of Fig. 1, looking` iuthe direction of the arrow. Fig. 3 is a section through the same on theline 8 3 of Fig. 1.

Like letters of reference indicate like parts throughout the severalviews.

Referring now to the details of the draw- I 'from a motor, either froma' battery or dynamo, neither of which, however, are here shown, but thesame may be of any approved form and located at any desired point. Thisshaft carries two fans, which may be of any of the well known forms ofconstruction suited to the purpose. One of these fans D is locatedopposite the opening` E, which is made in end of the case and issurrounded by the exterior rim or flange e, as seen in Figs. 1 and 3,the Spider-arms E', which extend across this opening, receiving one endof the fanshaft, as seen clearly in Fig. 1. This fan draws the air bysuction .from the room and discharges it through the opening Fin theside of the case out of the house,the said opening` being surrounded bythe collar or projection f for the attachment of a conduit or othermeans through which the foul air may be conducted outside of-the room,car, 01' compart'- ment. The course of the air is indicated by thearrows. The fan D is inclosed within the cylindrcal casing or chamber G,as shown,and from which the openingF communicates with the conduit f, asseen best in Fig. 2.

I-l is a cylindrcal casing within the case A and separated from thechamber in which the fan D is located by the partition h, which formsalso a portion of the cylindrcal case or chamber of the fan D, as seenin Fig. 3. I is a fan within this casing` and fast upon the shaft B. Ittakes the air from the outside of the building or car or othercompartment through the fiue or conduit J, which is arranged at theendof the case A, as shown, and connects with the fiue J2 at the side ofIOO the case and is shown as divided by a partition j, extendinglengthwise thereof. The

flue J has a collar 01' projecting fiange 01' portion J' for connectionwith the conduit which leads to the open air. These two conduits meet atone corner of the casing where the partition terminates, and at theother end it terminates at a distance from the end of the flue to form apassage for the air, as shown. The air enters the flue J, passes throughthe same and along the right-hand passage of the fiue J2, across the endand along the other passage, and then passes into the fan, the course ofthe air being indicated by the arrows in Figs. l and 3, being dischargedinto the room through the opening K in the top of the case A, which isshown as surrounded by the flange 7a. (See Fig. 1.)

Lis a pipe supported in the walls of the case A, or, as seen in Fig. 2,it may be in the extensions M thereof beneath the transverse fine orcondnit J, and from this pipe may extend any desired number of burnersor jets N for gas, gasolcne, or any other source of fiame, which isdesigned to heat the air in its passage through the conduits before itenters the fan-casing H.

The operation will be apparcnt. The device is set up in any desiredposition or place and the motor connected by belt with the pulley O, andthe connections with the inlet and outlet openings being made the motoris set in motion and the two fans are rotated, the one sucking in theair, as described and as indicated by the arrows, and the other forcin gthe foul air from the room, as described and as represented by thearrows, and thus the air in the room or compartment is kept pure and incircnlation, and when the gas-jets are lighted the air will be heatedbefore it is discharged into the room or other compartment.

Vh-at is claimed as new is'- 1. A portable device for the purposedeseribed, comprising a casing, a rotatable shaft inounted therein, twoindependent fans on said shaft one for forcing fresh air through thecasing into a room and the other for forcin g the foul air from the roomthrough said casin g, a eylindrical casing within the outer casing and apartition forming a part of said cylindrical casing and separating thesame from the fan-chamber, substantially as described.

2. A portable device for the purpose de seribed, com prising a casing, arotatable shaft mounted therein, two independent fans on said shaft, anda heater for heating the air before it enters said fan-casings and adivided fiue over said heater closed at one end, as set forth.

3. A portable device of the Character described, comprising a casin g,having a partition, two independent fan'casings within the same, arotatable shaft, a fan thereon in each fan-casing, an inlet to one ofthe said fancasings from the room and an ontlet therefrom, and conduitsleading from the open air to the other fan-casing, and an outlettherefrom into a room, snbstantially as specified.

tt. The combination of the casing with its inlet and outlet openings andthe fiues at right angles to each other and communicating and meeting atone corner of the casing, one of said oonduits divided longitudinally, ashaft, two independent fans thereon, and a heater arranged beneath saiddivided flne, all substantially as and for the purpose specified.

5. The portablc device hcrein described comprising a casing, a shaftextending therethrough, a pulley on said shaft, two independent fans onsaid shaft one to draw air in and the other to force it out, one fanbeing opposite an opening in the end of the casing, a flange around saidopening, a partition in the casing between the fans forming a portion ofthe case of one of the fans, the condnit J, the flue J 2 communicatingtherewith, the partition in said fiue, said Iiue and conduit uniting atone corner of the casing at the point where said partition terminates,and a heater beneath the fiue, all substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUST J. F. MILLER.

Titn esses:

O. V. PARKINsoN, G. E. Eis.

